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SPAW Heavy-DutyBearing UnitsInterchange Guide1
Heavy loads andcontamination requireheavy-duty protection.1236522
SPAW Heavy-Duty Bearing Units Interchange GuideThe Better OptionLess downtime.More profitability.NTN SPAW/SPW Heavy Duty Spherical Roller Bearing Units havebeen designed and tested to provide superior performance inapplications with heavy contamination concerns. These are easyto-install SAF/SN replacement units that are factory sealed, prelubricated, and assembled.4Product Features & Benefits1One-piece, sturdy ductile iron housing to withstand high shockand impact from falling debris2Repositionable snap ring allows for versatile fixed or float unit3Spring-loaded, single-lip contact bearing seal for superior sealing4Bearings with super-finished rollers for less noise, and racewaydesigns that accommodate higher misalignment5Unitized bearing insert allows for easy replacement6Phosphate-coated locknut/adapter sleeve for secure mountingand corrosion protection3
Table of ContentsNOMENCLATURE SYSTEM. 5PRIMARY ADAPTER MOUNT INTERCHANGE .6-7SECONDARY ADAPTER MOUNT INTERCHANGE .8-9SECONDARY SET COLLAR INTERCHANGE .10-11SAF STYLE INTERCHANGE . 12-13 NTN Bearing Corporation of America and NTN Bearing Corporation of Canada 2020. Although care has been taken to assure the accuracy of the datacompiled in this catalog, NTN does not assume any liability to any company or person for errors or omissions.4
SPAW Heavy-Duty Bearing Units Interchange GuideHeavy-Duty Block Nomenclature SystemBoreDiameterPrefixHousing SeriesBearingCSPW 2 2 201. PREFIXNo symbol:C:CM:Standard unit with sealed spherical rollerbearing insert2 open end covers(SFC housing with one cover only)1 open end cover, 1 closed end cover(SFC housing with end cover only)2. HOUSINGSP: Pillow block unit to SN housing dimensionsSPA: Pillow block unit to SAF housingdimensions(SP and SPA only) Ductile ironFSPA: Pillow block unit to SAF housingdimensionsDuctile iron, 4 boltSFC: 4 bolt piloted circular flange block for twoor four bolt arrangementSuffix307 N13. BEARINGW22xx: MX-W222xx series sealed spherical rollerbearing4. BORE DIAMETER (-Xnn)No value: Metric bore sizing (see tables)X: Number of inchesnn: Number of 1/16 incheseg.: -307 indicates a 3 7/16” bore5. SUFFIXN1: Ductile iron housing (Standard)FN1: (SP and SPA only) Ductile iron housing withsolid base and indents for two or four boltarrangementHow To Order Your Ideal Bearing UnitSPAWSFCWExample: When you order one SPAW2220-307N1, you will receive anassembly consisting of one SPA220N1 Pillow Block Housing,one MX-W22220EALLKW33C3 Bearing, and one HA2320M1Adapter.Example: When you order one SFCW2220N1, you will receive anassembly consisting of one SFC220N1 Flange Block Housing,one MX-W22220EALLKW33C3 Bearing, and one H2320XM1Adapter.When C-SPAW2220N1 or CM-SPAW2220N1 are specified, externalcovers will be supplied with the unit.When C-SFCW2220N1 or CM-SFCW2220N1 are specified, externalcovers will be supplied with the unit.Example: “C” prefix – 2 open end coversExample: “C” prefix – 2 open end covers“CM” prefix – 1 open end cover, 1 closed end coverSPWExample: When you order one SPW2220N1, you will receive anassembly consisting of one SP220N1 Pillow Block Housing,one MX-W22220EALLKW33C3 Bearing, and one H2320XM1Adapter.To order a solid base housing, add suffix F to the part number(example: SPW2220FN1).When C-SPW2220N1 or CM-SPW2220N1 are specified, external coverswill be supplied with the unit.“CM” prefix – 1 open end cover, 1 closed end coverNotes: – Open end cover service seals for which dimensions are shownare standard. For dimensions and availability of non-standardtaconite service seals, consult NTN Engineering.– All units are supplied in float arrangement and may beconverted to fixed by relocation of a snap ring.– All bearing inserts are supplied pre-lubricated with multi purpose industrial bearing grease.– Solid base housings may be drilled for 2 or 4 bolt arrangement.Grease fittings are provided with all units.Example: “C” prefix – 2 open end covers“CM” prefix – 1 open end cover, 1 closed end cover5
Primary Adapter Mount InterchangeBore SizeTimken QM(inches)Adapter MountAdapter Mount FixedAdapter Mount --5-1/2SPAW2232-508N1--
SPAW Heavy-Duty Bearing Units Interchange GuideDodgeRexnordAdapter Mount FixedAdapter Mount ExpAdapter Mount FixedAdapter Mount -ISAF-508RP4B532-ISAF-508RE--7
Secondary Adapter Mount InterchangeBore Size(inches)NTNTimken QMAdapter MountSingle 7N1-5-1/2SPAW2232-508N1-
SPAW Heavy-Duty Bearing Units Interchange GuideTimken QMDodgeDouble V-LockAdapter V215SMQVVPA17V300SMQVVPA20V307SMQVVPA20V308SM9
Secondary Set Collar InterchangeDodgeAdapter MountDouble Set Collar FixedDouble Set Collar /162-1/22-15/1633-7/163-1/210NTNBore Size(inches)Tapered Roller Bearing
SPAW Heavy-Duty Bearing Units Interchange GuideRexnordSet Collar FixedSet Collar ExpSet Collar FixedSet Collar ExpSet Collar FixedSet Collar AFS5507FMAF5507FMAFS5507FKAF5507FKAFS5507F------11
SAF Style InterchangeBore Size(inches)NTNSAFAdapter MountAdapter 2-1/22-15/1633-7/163-1/212
SPAW Heavy-Duty Bearing Units Interchange GuideLink-BeltDodgeAdapter MountAdapter Mount FixedAdapter Mount P4B532-USAF-508TTP4B532-USAF-508LER-13
SPAW Heavy-Duty Bearing Units Interchange GuideSince 1918, NTN has been atrusted OE manufacturer ofhigh-performing bearingproducts that increase companies’productivity and efficiency. NTN has been the world’s broad-line bearing manufacturer fornearly 100 years. NTN has the largest bearing manufacturing footprint in the UnitedStates. NTN is the largest supplier of American-made products to theconstruction and mining industries. NTN is a major supplier to over two-thirds of the world’s “Fortune500” manufacturing companies. More cars worldwide ride on NTN bearings and drivetrains thanany other manufacturer’s product.N TN was the first bearing manufacturerto be awarded the prestigious DemingPrize for recognition of its qualityproducts and systems.NTN is a registered
SPAW Heavy-Duty Bearing Units Interchange Guide 7 Bore Size (inches) NTN Timken QM Dodge Rexnord Adapter Mount Adapter Mount Fixed Adapter Mount Exp Adapter Mount Fixed Adapter Mount Exp Adapter Mount Fixed Adapter Mount Exp 1-15/16 SPAW2211-115N1 TAPA11K115SM TAPA11K115SEM P2B511-ISAF-115R P2B511-ISAF-115RE MAF6115 MAFS6115
